Gregory Harrison (gebore 31 Mei 1950) is 'n Amerikaanse akteur, vervaardiger, en regisseur. Hy is bekend vir sy rolle in die televisiereekse Trapper John, M.D. (1979) en Falcon Crest (1981).
- 1976: Jim, the World's Greatest
- 1984: Razorback
- 1987: North Shore
- 1992: Body Chemistry II: The Voice of a Stranger
- 1995: Hard Evidence
- 1996: It's My Party
- 2010: Accidental Icon: The Real Gidget Story
- 2010: Wings Across the Channel: Catalina Island's Aviation HIstory, 1946-Present
- 2016: Fair Haven
- 1977: Logan's Run
- 1979: Trapper John, M.D.
- 1981: Falcon Crest
- 1990: The Family Man
- 1990: True Detectives
- 1995: New York News
- 1999: Safe Harbor
- 2014: Reckless
- 2016: Interviews from the Dressing Room
- 1981: For Ladies Only
- 1983: The Fighter
- 1983: The Hasty Heart
- 1985: Seduced
- 1986: Oceans of Fire
- 1986: Picnic
- 1988: Red River
- 1990: Angel of Death
- 1990: Dangerous Pursuit
- 1991: Bare Essentials
- 1992: Breaking the Silence
- 1992: Duplicates
- 1992: Split Images
- 1993: Caught in the Act
- 1994: A Christmas Romance
- 1994: Lies of the Heart: The Story of Laurie Kellogg
- 1994: Mortal Fear
- 1994: Galaxy Beat
- 1995: Nothing Lasts Forever
- 1995: A Dangerous Affair
- 1996: Summer of Fear
- 1997: When Secrets Kill
- 1998: Running Wild
- 1998: Murder at 75 Birch
- 1999: Au Pair
- 2001: Au Pair II
- 2002: St. Sass
- 2005: Untitled Susie Essman Project
- 2009: Au Pair 3: Adventure in Paradise
- 2010: The Fuzz
- 2012: Undercover Bridesmaid
- 2013: After All These Years
- 2017: Signed, Sealed, Delivered: Home Again
- 2018: Signed, Sealed, Delivered: To the Altar
